Stethoscope



(No Model.)

L. D. RADZINSKYJ STETHOSGOPE INVENTQR W f WITNESSES ATTORNEYS.

UNITED STATES PATENT OFFICE.

LOUIS DANIEL RADZINSKY, or MoKEESPORT, PENNSYLVANTA.

STETHOSCOPE.

/ SPECIFICATION forming part of Letters-Patent No. 350,393, dated October 5, 1886.

Application filed July 9. I886. Serinl No. 207,561. (No model.)

To all whom. it may concern: Be it known that I, LoUIs DANIEL RADZIN- sKY,of McKeesport,in the county of Allegheny and State of Pennsyl vania,have invented a new and useful Improvement in Diagnostic Instruments for Medical and Surgical Purp oses, of which" the following is a full, clear, andexact description.

This invention has for its object the production of a diagnostic instrument for the more perfect auscultation of the thoracic or; gans, lungs, heart, and large vcsselsofthe same.

It consists, in part, of a stethoscope having its cup made of soft rubber of any desired pattermsuch rubber being a poor condoctor or practically a non-conductor of ex- .ternal sounds, thereby intensifying thesounds produced in the instrument or within its cup; and the invention more especially consists in a combination, with a stethoscope, of a peculirly constructed tambourine or drum, substantially as hereinafter describedand claimed,

the whole forming what I term a stethoscopet-ambourine, and the invention further consists in a special construction of the tambourine or drum,wl1ereby the sounds, normal orabuormal, conveyed from diflerent regions of the chest or other parts of the body of a person under examination are amplified andintensi- .ficd, so that the slightest murmurs, rales,

bruits, or valvular sounds are plainly and distinctly heard and appreciated. The cup. of the instrument being made of soft rubber does not permit of extraneous sounds interfering with the sounds looked for and obtained, as; k

vided with nuts on the back of an inner ring,

do ordinary stethoscopes made of wood, metal, or hard rubber, which materials are all conductors of sound-and readilytransmit alland double or compound instrument-s, but it will here be shown applied to a stethoscope with two tubes and two ear-muffs, and, when thus constructed, it is specially made with but few joints, and provided with means for hold ing it steady to the-ears without imparting to it a stiflness that will interfere with Its gen eral flexibility, as hereinafter described. Reference is to be had to the accompanying drawings, forming a part of this specification, in which'similar letters -of reference indicate corresponding parts in all the figures.-

Figure 1 represents a longitudinal view of a double or compound diagnostic instrument embodying my invention; Fig. 2, a longitudinal section of the cup portion of the instrument with its tambourine attachment; Fig. 3, a transverse section of the tambourine upon the line yy, in Fig. 2; and Fig. 4, a sectional view upon the line 2 z in Fig. l.

A is the cup of the stethoscope, which may beofany desired shapeor pattermbut which and also, preferably, its stem or tubes 13, are made of soft rubber and in one piece ,up' to the ear-muffs, to exclude extraneous sounds and to reduce the number of joints. Applied to the mouth of said cup A is a tambourine or drum, 0, which consists mainly, of a thin flexible dam or diaphragm, b, made of vulcanized caoutchouc that forms 'a very eflicient membrane to convey to the interior of the cup, and from thence to the ear, the sounds, normal or abnormal, but amplified or intensified, of the parts of the body under examination. This membrane b is secured to its, placelat the proper stretch by turning it in at-its edges and clamping the. same inbctween an inner cylinder or deepjring, c, and an outer flanged lunette or ring, d, said parts being made adjustable to regulate the tension by screw or screw-bolts e, fastened to the ring d, and pro- .f, whichreceives within it or bears. down upon the back end of the cylinder 0, or the tension of the diaphragm b may be otherwise provided for. The whole tambourine or drum 0 is made readily insertible within the softrubber cupyA. By thus combining a tambourine ordrum with a stethoscope or cup of soft 5 1 rubber very many times much stronger sounds passing through the instrument from the patient under examination are produced than is practicable with stethoscopes of ordinary construction, and this without changing their peculiar character.

The bifurcated stem or tubes B of the in- ICO cow-

-strument may have any suitable ear-pieces attached to their outer ends; but it will be 1 prevent external sounds from interfering,and IO allows of greater'liberty 'ofl motion and application, and provides for holding the instrument steady to the ear. The whole instrument, too, is of such a flexible character as to make it readily portable and available to use I 5 without difliculty under coverings and dresses.

To this cnd provisioi1 is, made for holding it steady to the ears without the aid of metallic springs that produce stifl'ness, simple elastic bands or cords G connecting the ear-end portions of the tubes -13, and serving to give the proper tension or hold to'the instrument on the head of the practitioner or person making the examination. I

Having thus described my invention, what I claim as new, and desire to s'ecure by Letters Patent,'is- Y I 1. A stethoscope having its cup made of soft rubber, essentially as and for the purposes herein 'setforth.

2. A stethoscopehaving its cup and stem or tube connected with said cup made of soft rubber and in af single piece, substantially as described. w v

the combination,w ith a stethoscope having-its cupor cup and stem made of soft rubber, ofa

sentially as specified. p I

4. In an instrument fordiagnos'tic-purposes,

ed in said cup, and having a dam or'tliaphragm scribed. v v

5. The tambourineor drum 0, composed of the membrane b, rings clamping said membrane to its place, and adjusting bolts or screws for regulating the tension of the membrane, in combination} with the cup Act a stethoscope adapted to receive said tambour- 6. In an instrument for diagnostic purposes, the combination, with-a stethoscope-cup and its tube or stem, of ear-pieces composed of one or mores'oft-rubber ear-mnflsand one or more hard-rubber caniculas or ear-tubes, substantially as described.

LOUIS DANIEL BADZINSKY. \Vitnesses: I

G; F. MYER,

1D.-M. CooLEv.

3. In inst umentsv for diagnostic purposes", I

the combination, with a stethoscope-cup made of soft rubber, of a tambourine or drum insert-- ine or drum within it, essentiallyas specified.

tambourine or drum applied to saidcuinesof vulcanizedcaout choue, substantially as de-' 

